<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="/login" method="post">
        账号：<input name="username" type="text"/><br/>
        密码：<input name="password" type="password"/><br/>
        <button type="submit">登录</button>
</form>
<div>{{ inf }}</div>
</body>
</html>